hide error when a window has non UTF-8 char in title

pyfpdb/Tables.py

@@ -231,7 +231,12 @@ def discover_nt_by_name(c, tablename):
     titles = {}
     win32gui.EnumWindows(win_enum_handler, titles)
     for hwnd in titles:
-        if not tablename in titles[hwnd]: continue
+        print "Tbales.py: tablename =", tablename, "title =", titles[hwnd]
+        try:
+            # this can blow up in XP on some windows, eg firefox displaying http://docs.python.org/tutorial/classes.html
+            if not tablename in titles[hwnd]: continue
+        except:
+            continue
         if 'History for table:' in titles[hwnd]: continue # Everleaf Network HH viewer window
         if 'HUD:' in titles[hwnd]: continue # FPDB HUD window
         if 'Chat:' in titles[hwnd]: continue # Some sites (FTP? PS? Others?) have seperable or seperately constructed chat windows